中国塑料2024，Vol.38Issue(5)：40-46,7.DOI:10.19491/j.issn.1001-9278.2024.05.008
微胶囊型自修复环氧树脂材料的力学性能及修复效率
Mechanical properties and repair efficiency of self-repairing microencapsulated epoxy resin
摘要
Abstract
To investigate the effect of the introduction of self-healing epoxy microcapsules on the mechanical properties and repairability of resin-based composite materials,a repair system consisting of in-situ polymerized epoxy microcap-sules and phthalic anhydride as a latent curing agent was incorporated into the mixture of E51-type epoxy resin and modi-fied polyetheramine curing agent,resulting in the formation of self-healing epoxy resin-based composite materials.The shear viscosity of the mixing system was analyzed,and the mechanical and repairing performance of the composite materi-als were investigated.The results indicated that the increase of the content of self-healing components resulted in a de-crease in the mechanical properties of the composite materials but an increase in their healing efficiency.However,the tensile strength of the repaired composite materials did not show a linear increment.Through comprehensive analysis on the experimental results,the optimal choice was determined to be a self-healing component ratio of 3/2 and a microcap-sule content of 8 wt%for the composite materials.Under these conditions,the resultant composite material exhibited tensile strength of 15.32 MPa and post-repair tensile strength of 10.13 MPa,presenting a healing efficiency of 66.12%.关键词
自修复微胶囊/环氧树脂基复合材料/力学性能/修复效率Key words
self-healing microcapsule/epoxy resin matrix composite/mechanical property/repair efficiency分类
化学化工引用本文复制引用
王涵,梁金华,高振国,姜炜,周昊..微胶囊型自修复环氧树脂材料的力学性能及修复效率[J].中国塑料,2024,38(5):40-46,7.基金项目
国家自然科学基金项目(12102199) （12102199）
